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- Q5. For the following center tapped transformer, show the waveform across each half of the secondary winding and across Ri, when a 100 V peak sine wave is applied to the primarywinding. What is the PIV rating must the diode have? (Use constant voltage drop model for the Silicon diode) IN4001 Ry OV 10k) D IN4001A step-up chopper has input voltage of 220 V and output voltage of 660 V. If the conducting time of the IGBT based chopper is 100 micro- sec, then duty cycle will be a. -0.66 b. 0.7 c. 1.66 d. 0.66If we increase the load than core loss and copper loss will... Decrease Increase Remain same
- Two silicon diodes are connected in parallel and in series with resistor 0.33kohms and a battery of 10V. the voltage across the resistor 0.33k ohms is ___. The current flowing through resistor 0.33K ohms is approximately equal to___. The current of one diode is___.Which of the following statements about bridge tip rectifiers is false? A) If the 1-phase type has source inductance, the average value of the output voltage is lower than in the absence of the inductance. B) The average output voltage value of the 1-phase type is 0.9 times the peak voltage of the network. C) none D) There are only odd harmonics in the current drawn by the 1-phase type from the mains. E) The average value of the output voltage of the 3-phase type is larger as the 3-phase and 1-phase types are comparedA 120 – volt AC voltage is applied across a 20 – ohm resistive load. Find values of current, max voltage, peak–to–peak voltage, average voltage, maximum current, peak–to–peak current, average current, and power. draw the circuit diagram
- Bypass diodes are connected in parallel with a solar cell to prevent the discharge of current from the battery to cell during night event. True FalseQ5. For the following center tapped transformer, show the wave form across each half of the secondary winding and across R1, when a 100 V peak sine wave is applied to the primarywinding. What is the PIV rating must the diode have? (Use constant voltage drop model for the Silicon diode) IN4001 R 10 ΚΩ I14001 Q6. Can we operate normal PN junction diode in breakdown region for longer duration? Give reason Q7. What is the specialty of Zener diode so as we can operate it in breakdown region for longer duration? Q8. What is the difference between Zener breakdown and Avalanche breakdown? Q9. Draw Zener regulator circuit to obtain regulated DC voltage 6.8 V. Considering input DC voltage in the range from 10V to 30V. Consider load resistance of 10KS. Q10. Determine maximum and minimum value of Zener current if value of series resistance is 1 K, load resistance is 2KN and input varies from 10V to 30V. Zener voltage is 5 V. Q11. What is LED? Q12. Which materials are used in manufacturing of LEDS?…Q5. For the following center tapped transformer, show the waveform across each half of the secondary winding and across R, when a 100 V peak sine wave is applied to the primarywinding. What is the PIV rating must the diode have? (Use constant voltage drop model for the Silicon diode) D IN4001 R 10 kn IN4001
- TRUE OR FALSE A. Ohmic contacts allow the flow of current through either direction. B. A p-n junction can be made from differently-doped semiconductors of different base materials. C. Zener breakdown occurs at moderate reverse biases only.Design of a DC-DC Converter. The Circuit Below shows a basic Buck-Boost Converter with a highly inductive Load. With a Deliberate mistake in the configuration of the Circuit Connection. The Value of L1 is 22mH, C1 is 10uF, R1 is 220 and L2 is 10mH. The circuit operates with a switching frequency of 20KHZ. The Duty cycle of the Clock signal V2 is given by the function below: ( 17 ) х0.2 Duty Cycle, k = 0. 55 + 100 Your Unique Duty Cycle = %3D Buck-Boost Converter Q1 IRG4BC10U D1 R1 222 1N4009 C1 LV1 12V L1 22mH 10µF L2 10mH a) Find the mistake in the configuration of the circuit and correct the connection error.In the circuit of figure Nº A, the secondary voltage Vs is 15 volts rms with a frequency of 60 Hz, R equal to 100 Ohms and C equal to 1000 microfarads. The diodes are silicon (Vd = 0.7 volts) and the Zener diode is 15 volts. Determine:a) The magnitude of the ripple voltage at Cb) The Magnitude of the Peak Inverse Voltage (PIV) for D1 and D2..